API to retrieve MDX from a save pivot?

Here it is:

/// Returns MDX string used to create pivot.<br>
/// <b>pPivotName</b> - fullname of pivot. Eg: "KPIs & Plugins/HoleFoods.pivot". Case insensitive.<br>
/// <b>pStatus</b> - Status of query execution.<br>
/// <b>MDX</b> - MDX query with filters<br> /// <b>BaseMDX</b> - MDX query without filters<br>
ClassMethod GetMdx(pPivotName As %String, Output MDX, Output BaseMDX) As %Status
{
    #dim tPivot As %DeepSee.Dashboard.Pivot
    #dim tPivotTable As %DeepSee.Component.pivotTable
    set MDX = ""
    set BaseMDX = ""

    set tPivot = ##class(%DeepSee.UserLibrary.Utils).%OpenFolderItem(pPivotName,.pStatus)
    return:'$IsObject(tPivot) $$$OK
    return:$$$ISERR(pStatus) pStatus

    set tPivotTable = ##class(%DeepSee.Component.pivotTable).%New()
    set pStatus = tPivot.%CopyToComponent(tPivotTable)
    return:$$$ISERR(pStatus) pStatus

     // returns tQueryText - mdx without filters
    set rs = tPivotTable.%CreateResultSet(.pStatus, .tParms, .tFilterInfo, .tAdvancedFilters, .BaseMDX)
    
    return:$$$ISERR(pStatus) pStatus

    set pStatus = tPivotTable.%GetFilterInfo(.tFilterInfo, .tAdvancedFilters)
    //return:$$$ISERR(pStatus) pStatus

    if (($d(tFilterInfo)=0) &&($d(tAdvancedFilters)=0)) {
        set MDX = BaseMDX // no filters, so we're good
    } else {
        // returns tQueryText - mdx with filters
        set rs = tPivotTable.%CreateResultSet(.pStatus, .tParms, .tFilterInfo, .tAdvancedFilters, .MDX)
        return:$$$ISERR(pStatus) pStatus
    }

    // Remove \n
    set MDX = $TR(MDX, $C(10), "")
    set BaseMDX = $TR(BaseMDX, $C(10), "")

    return pStatus
}

It is a part of MDX2JSON REST API.